Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)

Table 2

Spearman correlation coefficients and their statistical significance (in parentheses) between the arsin-transformed proportions of three morphometric traits (F3L: femur 3 length; T3L: tibia 3 length; TeL: tegmina length) and body length (BL) with respect to latitude (LAT), altitude (ALT), and three selected abiotic factors (TMEAN: mean annual temperature; PMm: mean difference between maximum and minimum mean monthly precipitation; WB: water balance) in males and females of 25 and 19 populations of D. pratensis and D vittatus, respectively.

Species (sex)	arsin Proportion	LAT	ALT	TMEAN	PMm	WB
D. pratensis M	F3L/BL	0.55 (0.004)	−0.47 (0.018)	−0.03 (ns)	0.19 (ns)	0.73 (<0.001)
	T3L/BL	0.55 (0.004)	−0.68 (<0.001)	−0.10 (ns)	0.04 (ns)	0.57 (0.003)
	TeL/BL	0.53 (0.006)	−0.56 (0.004)	0.07 (ns)	0.18 (ns)	0.77 (<0.001)
D. pratensis F	F3L/BL	0.63 (0.001)	−0.46 (0.022)	−0.61 (0.001)	−0.005 (ns)	0.39 (0.005)
	T3l/BL	0.66 (<0.001)	−0.58 (0.002)	−0.61 (0.001)	−0.22 (ns)	0.31 (ns)
	TeL/BL	0.71 (<0.001)	−0.73 (<0.001)	−0.14 (ns)	−0.13 (ns)	0.64 (0.001)
D. vittatus M	F3/BL	0.32 (ns)	−0.10 (ns)	0.10 (ns)	−0.63 (0.004)	0.07 (ns)
	T3/BL	−0.50 (ns)	−0.05 (ns)	0.32 (ns)	0.70 (0.001)	−0.32 (ns)
	Te/BL	−0.34 (ns)	0.10 (ns)	0.43 (ns)	0.66 (0.002)	−0.11 (ns)
D. vittatus F	F3/BL	−0.32 (ns)	0.06 (ns)	0.07 (ns)	0.51 (0.026)	−0.16 (ns)
	T3/BL	−0.49 (ns)	0.08 (ns)	0.26 (ns)	0.34 (ns)	−0.33 (ns)
	Te/BL	−0.60 (0.007)	0.002 (ns)	0.54 (0.016)	0.61 (0.006)	−0.37 (ns)

ns = non-significant.